Water-cooling trephine with saw blade convenient to replace

Abstract

The utility model relates to the field of trephine, in particular to a water-cooling trephine with a saw blade convenient to replace, which comprises a shell assembly and a trephine saw blade, an assembling mechanism is arranged at the end of the shell assembly, the trephine saw blade is detachably arranged on the assembling mechanism, and a driving mechanism for driving the trephine saw blade to work is arranged in the shell assembly. According to the water-cooling trephine with the saw blade convenient to replace, the pressing force of the trephine saw blade can be adjusted, so that the problems that the saw blade swings and fractures in the cutting process and certain danger is caused to workers due to the fact that the pressing force on the saw blade is too large or too small, and the cutting efficiency is affected due to the fact that the cutting force is insufficient due to too large friction force are solved. And meanwhile, the saw blade is easy and convenient to disassemble and assemble, and when the saw blade goes wrong, the saw blade is convenient to replace.

Description

Technical Field

[0001] The utility model relates to the field of ring saws, in particular to a water-cooled ring saw which is convenient for replacing saw blades. Background Art

[0002] The existing ring saw cannot adjust the clamping force of the saw blade during cutting operations. After a long period of work, the saw blade is worn and thinned and is prone to swinging, which affects the cutting stability. In severe cases, it may break during the cutting process, causing certain dangers to the workers. At the same time, after the saw blade is installed, the cutting force may be insufficient due to excessive friction, affecting the cutting efficiency. In addition, the saw blade is inconvenient to disassemble and assemble, which makes it very troublesome to replace the saw blade. Therefore, how to overcome the above-mentioned technical problems and defects has become a key issue that needs to be solved. Utility Model Content

[0003] The purpose of the invention of the utility model is to overcome the defects described in the background technology, so as to realize a water-cooled ring saw which is convenient for replacing saw blades. The device can adjust the clamping force of the ring saw blade, so as to avoid excessive or insufficient clamping force on the saw blade, which causes the saw blade to swing or break during the cutting process, causing certain dangers to the workers. It may also cause insufficient cutting force due to excessive friction, affecting the cutting efficiency, thereby ensuring the cutting stability. At the same time, the saw blade is simple and convenient to disassemble and assemble, so it is easy to replace the saw blade when there is a problem with the saw blade.

[0004] To achieve the above-mentioned invention object, the technical solution of the utility model is: a water-cooled ring saw for convenient replacement of saw blades, comprising a housing assembly and a ring saw blade. An assembly mechanism is provided at the end of the housing assembly, and the ring saw blade is detachably arranged on the assembly mechanism. A driving mechanism for driving the ring saw blade to work is provided inside the housing assembly.

[0005] The assembly mechanism includes a fixed shell that can be detachably arranged with the shell assembly, and a limiting shell is hingedly arranged on the fixed shell, and the limiting shell can be fixed to the fixed shell by a lead screw. It is convenient to disassemble and assemble the ring saw blade when it needs to be replaced. The ring saw blade is arranged between the fixed shell and the limiting shell, and a driving wheel driven by a driving mechanism is arranged inside the fixed shell, and the driving wheel abuts against the side of the ring saw blade. A passive wheel that can abut against the side of the ring saw blade is arranged inside the limiting shell. A clamping unit that can limit the position of the ring saw blade is slidably arranged on the fixed shell, and the movement of the ring saw blade is limited by the driving wheel, the passive wheel and the clamping unit.

[0006] In the above-mentioned water-cooled ring saw that is convenient for replacing saw blades, the housing assembly includes an outer shell and a tail cover. The tail cover is detachably arranged at the end of the outer shell. It provides an assembly base for the internal electrical appliances and protects the electrical appliances. A handle is integrally arranged on the tail cover, and one end of the handle is fixedly arranged on the fixed shell. A control handle is also fixedly arranged on the fixed shell. It is convenient for workers to use the ring saw.

[0007] In the above-mentioned water-cooled ring saw for convenient replacement of saw blades, a convex ring is provided on the driving wheel, and a groove corresponding to the position of the convex ring is provided on the ring saw blade. The ring saw blade can be simply limited, which is convenient for subsequent installation and cutting operations. A limit block that can abut against the ring saw blade is fixedly provided on the fixed shell on the side of the driving wheel, preventing the ring saw blade from swinging during the cutting operation.

[0008] In the above-mentioned water-cooled ring saw for convenient replacement of saw blades, an adjustment plate is hingedly arranged inside the limit shell, and the passive wheel is rotatably arranged in the middle of the adjustment plate. A connecting rod with a knob portion is rotatably arranged on the limit shell, and the knob portion of the connecting rod is located outside the limit shell, and the end of the adjustment plate is arranged in contact with the connecting rod. It can cooperate with the active wheel to limit the movement of the ring saw blade, and at the same time, it can adjust the pressing force of the ring saw blade, which is convenient for subsequent cutting operations.

[0009] In the above-mentioned water-cooled ring saw that facilitates replacement of saw blades, the clamping unit includes a clamping plate slidably arranged with a fixed shell, and the clamping plate is located between the fixed shell and the ring saw blade. The upper and lower ends of the clamping plate are rotatably provided with clamping wheels that can abut against the inner ring of the ring saw blade. It can cooperate with the driving wheel, the driven wheel and the clamping unit to limit the movement of the ring saw blade, and at the same time facilitate the disassembly and assembly of the ring saw blade. It can also protect the power transmission position to prevent impurities or cut powder from entering the friction position and affecting the service life.

[0010] In the above-mentioned water-cooled ring saw that facilitates the replacement of saw blades, a water plate is detachably provided on the side of the clamping plate facing the ring saw blade, and a water channel is provided inside the water plate. The water outlet of the water channel is provided with multiple outlets, which are respectively facing the cutting part of the ring saw blade and the abutment position of the driving wheel and the ring saw blade, and the abutment position of the two clamping wheels and the ring saw blade. A water supply pipe connected to the water channel is fixedly provided on the clamping plate, and the water supply pipe passes through the end of the tail cover and is connected to the outside world. The contact position between the ring saw blade and the outside can be cooled to avoid unnecessary damage to the ring saw blade caused by excessive temperature during cutting.

[0011] In the above water-cooled ring saw with convenient saw blade replacement, the driving mechanism includes a controller and a control switch, the controller is fixedly arranged in a chamber formed by the shell and the inside of the tail cover, and the control switch is fixedly arranged on the handle and the control switches are electrically connected.

[0012] In the above-mentioned water-cooled ring saw that is convenient for replacing saw blades, the driving mechanism also includes a driving motor fixedly arranged inside the shell, and the driving motor is electrically connected to the controller. A first bevel gear is fixedly arranged at the output end of the driving motor, and the first bevel gear is rotatably arranged inside the fixed shell through a bearing. A second bevel gear meshing with the first bevel gear is rotatably arranged inside the fixed shell through a bearing, and the second bevel gear is coaxially fixed with the driving wheel through a coupling. The ring saw blade is driven to perform cutting operations on the outside.

[0013] In the above water-cooled ring saw with convenient saw blade replacement, the top of the fixed shell is detachably provided with a protective cover located above the ring saw blade, and the bottom of the fixed shell is detachably provided with a splash shield located below the ring saw blade. This can protect workers during cutting operations and prevent them from being injured by splashed cuttings and broken ring saw blades.

[0014] Compared with the prior art, the water-cooled ring saw of the utility model that facilitates replacement of saw blades has at least the following beneficial effects:

[0015] 1. The utility model provides a water-cooled ring saw for convenient replacement of saw blades, comprising a housing assembly and a ring saw blade, and an assembly mechanism arranged at the end of the housing assembly. The driving mechanism for driving the ring saw blade can limit the movement of the saw ring by cooperating at a plurality of positions, and can also adjust the pressing force of the ring saw blade, so as to avoid excessive or insufficient pressing force on the saw blade, which may cause the saw blade to swing or break during cutting, or insufficient cutting force due to excessive friction, thereby affecting cutting efficiency, thereby ensuring cutting stability, and at the same time, when problems occur with the saw blade, the saw blade can be conveniently disassembled and assembled for replacement, and the power transmission position can be protected to prevent impurities or cut powder from entering the friction position and affecting the service life.

[0016] 2. The water-cooled ring saw of the utility model, which is convenient for replacing saw blades, is provided with a water plate arranged on a clamping plate, a water channel opened inside the water plate, and a water supply pipe fixed on the clamping plate and connected to the water channel, which can cool the contact position between the saw blade and the outside, avoiding unnecessary damage to the ring saw blade caused by excessive temperature during cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the water-cooled ring saw of the utility model, which is convenient for replacing saw blades;

[0018] Figure 2 This is a schematic diagram of the driving mechanism structure of the water-cooled ring saw of the utility model for convenient replacement of saw blades;

[0019] Figure 3It is a schematic diagram of the exploded structure of the assembly mechanism of the water-cooled ring saw of the utility model for convenient replacement of saw blades;

[0020] Figure 4 It is a schematic diagram of the position of the passive wheel of the water-cooled ring saw of the utility model for convenient replacement of saw blades;

[0021] Figure 5 The utility model is a schematic diagram of the limiting structure of the ring saw blade in the working state of the water-cooled ring saw which facilitates the replacement of the saw blade.

[0022] In the figure: 1, housing assembly; 11, outer shell; 12, tail cover; 13, grip; 14, control handle;

[0023] 2. Ring saw blade;

[0024] 3. Assembly mechanism; 31. Fixed shell; 32. Limiting shell; 33. Driving wheel; 34. Passive wheel;

[0025] 35. Pressing unit; 351. Pressing plate; 352. Pressing wheel;

[0026] 36. convex ring; 37. groove; 38. limit block; 39. adjustment plate; 40. connecting rod;

[0027] 4. driving mechanism; 41. controller; 42. control switch; 43. driving motor; 44. first bevel gear; 45. second bevel gear;

[0028] 5. Water plate; 6. Water channel; 7. Water outlet; 8. Water supply pipe; 9. Protective cover; 10. Splash cover. DETAILED DESCRIPTION

[0029] The following is a more detailed description of the water-cooled ring saw for convenient replacement of saw blades of the utility model in conjunction with the accompanying drawings and through specific implementation methods.

[0030] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0031] See also Figure 1-Figure 5The water-cooled ring saw of this embodiment, which is convenient for replacing saw blades, can adjust the pressing force of the ring saw blade 2, so as to avoid excessive or insufficient pressing force on the saw blade, which causes the saw blade to swing and break during the cutting process, causing certain dangers to the staff, and may also cause insufficient cutting force due to excessive friction, affecting the cutting efficiency, thereby ensuring cutting stability. At the same time, the saw blade is simple and convenient to disassemble and assemble, and it is convenient to replace the saw blade when there is a problem with the saw blade. In this embodiment, it mainly includes a shell assembly 1 and a ring saw blade 2. An assembly mechanism 3 is provided at the end of the shell assembly 1, and the ring saw blade 2 is detachably arranged on the assembly mechanism 3. The assembly mechanism 3 includes a fixed shell 31 detachably arranged with the shell assembly 1, and a limit shell 32 is hingedly provided on the fixed shell 31, and the limit shell 32 can be fixedly arranged with the fixed shell 31 through a lead screw. It is convenient to disassemble and assemble the ring saw blade 2 when it needs to be replaced. The shell assembly 1 includes a shell 11 and a tail cover 12. The tail cover 12 is detachably arranged at the end of the shell 11. It provides an assembly base for the internal electrical appliances and protects them at the same time.

[0032] The tail cover 12 is integrally provided with a handle 13, and one end of the handle 13 is fixedly provided with the fixed shell 31. The fixed shell 31 is also fixedly provided with a control handle 14. It is convenient for workers to use the ring saw blade 2. The top of the fixed shell 31 is detachably provided with a protective cover 9 located above the ring saw blade 2, and the bottom of the fixed shell 31 is detachably provided with a splash shield 10 located below the ring saw blade 2. It can protect the workers during the cutting operation and avoid injuries to the workers caused by splashed cutting objects and broken ring saw blades 2.

[0033] To facilitate the disassembly and assembly of the saw blade. Figure 1-Figure 5 In this embodiment, the ring saw blade 2 is arranged between a fixed shell 31 and a limiting shell 32. A driving wheel 33 driven by a driving mechanism 4 is arranged inside the fixed shell 31, and the driving wheel 33 abuts against the side of the ring saw blade 2. A convex ring 36 is arranged on the driving wheel 33, and a groove 37 corresponding to the position of the convex ring 36 is provided on the ring saw blade 2. The ring saw blade 2 can be limited in the front and rear directions during the cutting operation, which is convenient for subsequent installation and cutting operations. A limiting block 38 that can abut against the ring saw blade 2 is fixedly arranged on the fixed shell 31 on the side of the driving wheel 33. The ring saw blade 2 is further limited to prevent the ring saw blade 2 from swinging during the cutting operation.

[0034] The interior of the limiting shell 32 is provided with a passive wheel 34 that can abut against the side of the ring saw blade 2. The interior of the limiting shell 32 is hingedly provided with an adjustment plate 39, and the passive wheel 34 is rotatably provided in the middle of the adjustment plate 39. The limiting shell 32 is rotatably provided with a connecting rod 40 with a knob portion, and the knob portion of the connecting rod 40 is located outside the limiting shell 32. The end of the adjusting plate 39 is abutted against the connecting rod 40 through a spring-loaded bolt structure, and the spring-loaded bolt structure is a mature prior art and will not be described in detail here. It can cooperate with the driving wheel 33 to achieve the limit of the movement of the ring saw blade 2. When it is necessary to adjust the clamping force on the ring saw blade 2, the knob is turned to move the end of the adjustment plate 39 closer to or away from the ring saw blade 2 through the connecting rod 40, thereby driving the passive wheel 34 to move to adjust the clamping force on the ring saw blade 2, thereby avoiding excessive or insufficient clamping force on the saw blade, which may cause the saw blade to break during cutting or insufficient cutting force due to excessive friction, affecting the cutting efficiency, thereby ensuring cutting stability.

[0035] A clamping unit 35 capable of limiting the position of the ring saw blade 2 is slidably provided on the fixed shell 31, and the movement of the ring saw blade 2 is limited by the driving wheel 33, the driven wheel 34 and the clamping unit 35. The clamping unit 35 includes a clamping plate 351 slidably provided with the fixed shell 31, and the clamping plate 351 is fixed to the fixed shell 31 by bolts, and the clamping plate 351 is located between the fixed shell 31 and the ring saw blade 2. The upper and lower ends of the clamping plate 351 are rotatably provided with clamping wheels 352 capable of abutting against the inner ring of the ring saw blade 2. When installing the ring saw blade 2, the clamping plate 351 is moved on the fixed shell 31, so that the clamping wheel 352 abuts against the ring saw blade 2, and then cooperates with the driving wheel 33 and the driven wheel 34 to limit the movement of the ring saw blade 2, and at the same time facilitates the disassembly and assembly of the ring saw blade 2.

[0036] In order to cool the saw blade. In this embodiment, see Figure 1-Figure 3 The pressure plate 351 is detachably provided with a water plate 5 on one side facing the ring saw blade 2, and a water channel 6 is provided inside the water plate 5. The water outlet 7 of the water channel 6 is provided with multiple outlets 7 facing the cutting part of the ring saw blade 2 and the contact position between the driving wheel 33 and the ring saw blade 2, and the contact position between the two pressure wheels 352 and the ring saw blade 2. A water supply pipe 8 connected to the water channel 6 is fixedly provided on the pressure plate 351, and the water supply pipe 8 passes through the end of the tail cover 12 and is connected to the outside. When performing the cutting operation, the contact position between the ring saw blade 2 and the outside can be sprayed with water to cool down, so as to avoid unnecessary damage to the ring saw blade 2 caused by excessive temperature during cutting, thereby affecting the service life of the ring saw blade 2.

[0037] In order to achieve the cutting of external objects. Figure 2 and Figure 4, a driving mechanism 4 for driving the ring saw blade 2 is arranged inside the housing assembly 1. The driving mechanism 4 includes a controller 41 and a control switch 42, and the controller 41 is fixedly arranged in a chamber formed by the inside of the housing 11 and the tail cover 12. The control switch 42 is fixedly arranged on the handle 13 and the control switch 42 is electrically connected to the control switch 42. The driving mechanism 4 also includes a driving motor 43 fixedly arranged inside the housing 11, and the driving motor 43 is electrically connected to the controller 41. A first bevel gear 44 is fixedly arranged at the output end of the driving motor 43, and the first bevel gear 44 is rotatably arranged inside the fixed housing 31 through a bearing. A second bevel gear 45 meshing with the first bevel gear 44 is rotatably arranged inside the fixed housing 31 through a bearing, and the second bevel gear 45 is coaxially fixed with the driving wheel 33 through a coupling. When cutting operation is required, the control switch 42 is pressed, and the controller 41 controls the driving motor 43 to work after detecting the signal of the control switch 42. The driving motor 43 drives the ring saw blade 2 to rotate through the first bevel gear 44 and the second bevel gear 45 to perform cutting operation on the outside.

[0038] The method of using the water-cooled ring saw for conveniently replacing saw blades of the utility model is as follows: first, when cutting an object, hold the handle 13 in one hand and the control handle 14 in the other hand, pick up the ring saw so that the ring saw blade 2 is aligned with the cutting part to perform the cutting operation. At this time, the control switch 42 can be pressed, and the controller 41 controls the drive motor 43 to work after detecting the signal of the control switch 42. The drive motor 43 drives the ring saw blade 2 to rotate through the first bevel gear 44 and the second bevel gear 45 to perform cutting operations on the outside, and the ring saw blade 2 is prevented from swinging by the limit block 38. In this process, water is supplied to the waterway 6 through the water supply pipe 8, so that water is sprayed from the water outlet 7 to the ring saw blade 2 to cool down the ring saw blade 2 in the cutting process, so as to avoid unnecessary damage to the ring saw blade 2 caused by excessive temperature during cutting, thereby affecting the service life of the ring saw blade 2. During the cutting operation, the protective cover 9 and the anti-splash cover 10 are used to protect the staff to avoid injuries to the staff when the splashed cutting objects and the ring saw blade 2 are broken. The passive wheel 34 can also be moved away from or close to the ring saw blade 2 through the connecting rod 40, and the clamping force of the ring saw blade 2 can be adjusted to avoid excessive or insufficient clamping force on the saw blade, which may cause the saw blade to break during cutting or insufficient cutting force due to excessive friction, thereby ensuring cutting stability.

[0039] When the ring saw blade 2 needs to be replaced, the bolts on the clamping plate 351 are loosened, and the clamping plate 351 is moved away from the ring saw blade 2, thereby moving the clamping wheel 352 away from the ring saw blade 2. Then the lead screw is removed to release the fixed connection between the limiting shell 32 and the fixed shell 31. At this time, the limiting shell 32 can be rotated to completely leak out the ring saw blade 2, and the ring saw blade 2 can be directly removed. The new ring saw blade 2 is placed on the side of the driving wheel 33, and the front and rear directions are limited by the protrusions and grooves 37. At this time, the limiting shell 32 is rotated to press the passive wheel 34 on the ring saw blade 2, thereby limiting the position of the ring saw blade 2. The limiting shell 32 is then fixedly set on the fixed shell 31 by the lead screw. Then the clamping plate 351 is close to the ring saw blade 2, so that the clamping wheel 352 fits with the ring saw blade 2, and the position of the clamping plate 351 is fixed by bolts. At this time, the freedom of movement of the ring saw blade 2 is completely limited, and the ring saw blade 2 can only rotate. The replacement of the ring saw blade 2 is completed.

[0040] Unless otherwise defined, the technical or scientific terms used herein shall have the usual meanings understood by persons of ordinary skill in the field to which the present invention belongs. The use of "one" or "an" and other similar words in the specification and claims of this application does not necessarily indicate a quantitative limitation. "Include" or "comprises" and other similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and other similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0041] The exemplary implementation of the present invention is described in detail above with reference to the preferred embodiments. However, it can be understood by those skilled in the art that, without departing from the concept of the present invention, various modifications and variations can be made to the above-mentioned specific embodiments, and various combinations of the various technical features and structures proposed in the present invention can be made without exceeding the protection scope of the present invention.

Claims

1. A water-cooled ring saw that is convenient for replacing saw blades, characterized in that: The invention comprises a housing assembly (1) and a ring saw blade (2); an assembly mechanism (3) is arranged at the end of the housing assembly (1); the ring saw blade (2) is detachably arranged on the assembly mechanism (3); a driving mechanism (4) for driving the ring saw blade (2) to work is arranged inside the housing assembly (1); the assembly mechanism (3) comprises a fixed shell (31) detachably arranged with the housing assembly (1); a limit shell (32) is hingedly arranged on the fixed shell (31); the ring saw blade (2) is arranged between the fixed shell (31) and the limit shell (32); 2), a driving wheel (33) driven by a driving mechanism (4) is arranged inside the fixed shell (31), the driving wheel (33) abuts against the side of the ring saw blade (2), a passive wheel (34) abuts against the side of the ring saw blade (2) is arranged inside the limiting shell (32), a clamping unit (35) capable of limiting the position of the ring saw blade (2) is slidably arranged on the fixed shell (31), and the movement of the ring saw blade (2) is limited by the driving wheel (33), the passive wheel (34) and the clamping unit (35).

2. The water-cooled ring saw for convenient replacement of saw blades according to claim 1, characterized in that: The housing assembly (1) comprises an outer shell (11) and a tail cover (12), wherein the tail cover (12) is detachably arranged at the end of the outer shell (11), and a handle (13) is integrally arranged on the tail cover (12), one end of the handle (13) is fixedly arranged on a fixed shell (31), and a control handle (14) is also fixedly arranged on the fixed shell (31).

3. The water-cooled ring saw for convenient saw blade replacement according to claim 2, characterized in that: The driving wheel (33) is provided with a convex ring (36), the ring saw blade (2) is provided with a groove (37) corresponding to the position of the convex ring (36), and a limit block (38) capable of abutting against the ring saw blade (2) is fixedly provided on the fixed shell (31) on the side of the driving wheel (33).

4. The water-cooled ring saw for convenient saw blade replacement according to claim 2, characterized in that: An adjustment plate (39) is hingedly arranged inside the limiting shell (32), the passive wheel (34) is rotatably arranged in the middle of the adjustment plate (39), a connecting rod (40) with a knob portion is rotatably arranged on the limiting shell (32), the knob portion of the connecting rod (40) is located outside the limiting shell (32), and the end of the adjustment plate (39) is arranged to abut against the connecting rod (40).

5. The water-cooled ring saw for convenient saw blade replacement according to claim 1, characterized in that: The clamping unit (35) comprises a clamping plate (351) slidably arranged with the fixed shell (31), the clamping plate (351) being located between the fixed shell (31) and the ring saw blade (2), and clamping wheels (352) which can be rotatably arranged at the upper and lower ends of the clamping plate (351) and can abut against the inner ring of the ring saw blade (2).

6. The water-cooled ring saw for convenient saw blade replacement according to claim 5, characterized in that: A water plate (5) is detachably provided on one side of the clamping plate (351) facing the ring saw blade (2); a water channel (6) is provided inside the water plate (5); a plurality of water outlets (7) of the water channel (6) are provided, each of which is oriented toward the cutting portion of the ring saw blade (2), the contact positions of the driving wheel (33) and the ring saw blade (2), and the contact positions of the two clamping wheels (352) and the ring saw blade (2); and a water supply pipe (8) connected to the water channel (6) is fixedly provided on the clamping plate (351).

7. The water-cooled ring saw for convenient replacement of saw blades according to claim 2, characterized in that: The driving mechanism (4) comprises a controller (41) and a control switch (42); the controller (41) is fixedly arranged in a chamber formed by the interior of the housing (11) and the tail cover (12); the control switch (42) is fixedly arranged on the handle (13) and the control switch (42) is electrically connected to the control switch (42).

8. The water-cooled ring saw for convenient saw blade replacement according to claim 7, characterized in that: The driving mechanism (4) further comprises a driving motor (43) fixedly arranged inside the housing (11), the driving motor (43) being electrically connected to the controller (41), a first bevel gear (44) being fixedly arranged at the output end of the driving motor (43), the first bevel gear (44) being rotatably arranged inside the fixed housing (31) via a bearing, a second bevel gear (45) meshing with the first bevel gear (44) being rotatably arranged inside the fixed housing (31) via a bearing, and the second bevel gear (45) being coaxially fixedly arranged with the driving wheel (33) via a coupling.

9. The water-cooled ring saw for convenient replacement of saw blades according to any one of claims 1 to 8, characterized in that: The top end of the fixed shell (31) is detachably provided with a protective cover (9) located above the ring saw blade (2), and the bottom end of the fixed shell (31) is detachably provided with a splash shield (10) located below the ring saw blade (2).

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